Integrated fan-out package and method of fabricating the same

ABSTRACT

An integrated fan-out package including an insulating encapsulation, a radio frequency integrated circuit (RF-IC), an antenna, a ground conductor, and a redistribution circuit structure is provided. The integrated circuit includes a plurality of conductive terminals. The RF-IC, the antenna, and the ground conductor are embedded in the insulating encapsulation. The ground conductor is between the RF-IC and the antenna. The redistribution circuit structure is disposed on the insulating encapsulation, and the redistribution circuit structure is electrically connected to the conductive terminals, the antenna, and the ground conductor. A method of fabricating the integrated fan-out package is also provided

BACKGROUND

The semiconductor industry has experienced rapid growth due tocontinuous improvements in the integration density of various electroniccomponents (i.e., transistors, diodes, resistors, capacitors, etc.). Forthe most part, this improvement in integration density has come fromrepeated reductions in minimum feature size, which allows more of thesmaller components to be integrated into a given area. These smallerelectronic components also require smaller packages that utilize lessarea than previous packages. Some smaller types of packages forsemiconductor components include quad flat packages (QFPs), pin gridarray (PGA) packages, ball grid array (BGA) packages, and so on.Currently, integrated fan-out packages are becoming increasingly popularand are gradually applied into packages of RF-IC for their compactness.

In the packaging technology of the RF-IC, how to integrate the RF-IC andthe corresponding antenna into a single integrated fan-out package is animportant issue concerned by research and develop engineers.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present disclosure are best understood from the followingdetailed description when read with the accompanying figures. It isnoted that, in accordance with the standard practice in the industry,various features are not drawn to scale. In fact, the dimensions of thevarious features may be arbitrarily increased or reduced for clarity ofdiscussion.

FIG. 1 through FIG. 7 are cross-sectional views schematicallyillustrating a process flow for fabricating an integrated fan-outpackage in accordance with some embodiments.

FIG. 8 schematically illustrates a perspective view of the patternedconductive layer shown in FIG. 1.

FIG. 9 schematically illustrates a perspective view of the patternedconductive layer and a portion of the redistribution circuit structureshown in FIG. 4.

FIG. 10 through FIG. 14 are perspective views schematically illustratingthe patterned conductive layer and a portion of the redistributioncircuit structure in accordance with various embodiments.

DETAILED DESCRIPTION

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components and arrangements are describedbelow to simplify the present disclosure. These are, of course, merelyexamples and are not intended to be limiting. For example, the formationof a first feature over or on a second feature in the description thatfollows may include embodiments in which the first and second featuresare formed in direct contact, and may also include embodiments in whichadditional features may be formed between the first and second features,such that the first and second features may not be in direct contact. Inaddition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.

Further, spatially relative terms, such as “beneath,” “below,” “lower,”“above,” “upper” and the like, may be used herein for ease ofdescription to describe one element or feature's relationship to anotherelement(s) or feature(s) as illustrated in the figures. The spatiallyrelative terms are intended to encompass different orientations of thedevice in use or operation in addition to the orientation depicted inthe figures. The apparatus may be otherwise oriented (rotated 90 degreesor at other orientations) and the spatially relative descriptors usedherein may likewise be interpreted accordingly.

FIG. 1 through FIG. 7 are cross-sectional views schematicallyillustrating a process flow for fabricating an integrated fan-outpackage in accordance with some embodiments; FIG. 8 schematicallyillustrates a perspective view of the patterned conductive layer shownin FIG. 1; and FIG. 9 schematically illustrates a perspective view ofthe patterned conductive layer and a portion of the redistributioncircuit structure shown in FIG. 4.

Referring to FIG. 1, a carrier C having a de-bonding layer DB and adielectric layer DI formed thereon is provided, wherein the de-bondinglayer DB and the dielectric layer DI are stacked over the carrier C. Inother words, the de-bonding layer DB is between the carrier C and thedielectric layer DI. In some embodiments, the carrier C is a glasssubstrate, the de-bonding layer DB is a light-to-heat conversion (LTHC)release layer formed on the glass substrate, and the dielectric layer DIis a polybenzoxazole (PBO) layer formed on the de-bonding layer DB, forexample. However, the materials of the carrier C, the de-bonding layerDB and the dielectric layer DI are not limited in the invention. In somealternative embodiments, the dielectric layer DI may be omitted; inother words, merely the de-bonding layer DB is formed over the carrierC.

As shown in FIG. 1, a patterned conductive layer 110 is then formed onthe dielectric layer DI. In some embodiments, the aforesaid patternedconductive layer 110 is formed by sputtering of a seed layer,photolithography, plating, etch, and photoresist stripping processes.The fabrication of the patterned conductive layer 110 may include thefollowing steps. First, a seed layer (e.g. Ti/Cu seed layer) is formedon the surface of the dielectric layer DI through sputtering, and aphotoresist is formed on the seed layer. Then, photolithography anddevelopment processes are performed to transfer a predetermined patternonto the photoresist such that portions of the seed layer are exposed bythe patterned photoresist. By using the patterned photoresist as a mask,a plating process is performed so as to plate conductive material on theportions of the seed layer exposed by the patterned photoresist.Thereafter, by using the plated conductive material as a mask, theportions of the seed layer uncovered by the conductive material areremoved so as to accomplish the formation of the patterned conductivelayer 110. For example, the material of the patterned conductive layer110 includes copper or other suitable metals.

Referring to FIG. 1 and FIG. 8, the patterned conductive layer 110includes at least one antenna 112 and at least one grounded conductor114. Two antennas 112 and four grounded conductors 114 are shown in FIG.1 for illustration. However, the number of the antennas 112 and thegrounded conductors 114 is not limited in the invention. The number ofthe at least one antenna 112 and the at least one grounded conductor 114may be modified in accordance with actual design. In some embodiments,the at least one antenna 112 may be a dipole antenna, and the at leastone antenna 112 includes a first antenna portion 112 a and a secondantenna portion 112 b separated from each other. As shown in FIG. 8, thefirst antenna portion 112 a and the second antenna portion 112 b areL-shaped antennas, for example. The at least one grounded conductor 114may include one grounded and conductive plate or the at least onegrounded conductor 114 may include a plurality of paralleled, groundedand conductive plates. However, the shape of the first antenna portion112 a, the second antenna portion 112 b and the at least one groundedconductor 114 is not limited in the invention. The shape of number ofthe first antenna portion 112 a, the second antenna portion 112 b andthe at least one grounded conductor 114 may be modified in accordancewith actual design. The at least one grounded conductor 114 not onlyprovides grounding of the at least one antenna 112, but also reflectselectromagnetic wave generated from the at least one antenna 112 (i.e.the antenna portion 112 a and the second antenna portion 112 b). Inother words, the at least one grounded conductor 114 is considered as anelectromagnetic wave reflector that is electrically insulated from theantenna 112. In some alternative embodiments, the patterned conductivelayer 110 may further include a plurality of conductive viaselectrically connected to the redistribution conductive layers 144(shown in FIG. 4).

Since the at least one antenna 112 and the at least one groundedconductor 114 of the patterned conductive layer 110 are formed by aplating process, the material of the at least one antenna 112 and thematerial of the at least one grounded conductor 114 are substantiallythe same.

In some alternative embodiments, in addition to the at least one antenna112 and the at least one grounded conductor 114, the patternedconductive layer 110 may further include at least one conductive post(not shown). It is noted that the aforesaid conductive post, the atleast one antenna 112 and the at least one grounded conductor 114 may beformed by the same process. In other words, the conductive post, theantenna 112 and the grounded conductor 114 may be formed by a platingprocess. The conductive post, the antenna 112 and the grounded conductor114 may be substantially the same in material.

Referring to FIG. 2, a radio frequency integrated circuit (RF-IC) 120 ispicked and placed on the dielectric layer DI such that the at least onegrounded conductor 114 is between the RF-IC 120 and the correspondingantenna 112. The RF-IC 120 includes a plurality of conductive terminals122 and a passivation layer 124, wherein the conductive terminals 122are copper pillars or other suitable conductive pillars. The conductiveterminals 122 are distributed on an active surface 120 a of the RF-IC120, and the passivation layer 124 is disposed on the active surface 120a of the RF-IC 120 to cover the conductive terminals 122. For example,the RF-IC 120 is adhered with the dielectric layer DI through dieattachment film (DAF), adhesive and so on. In some alternativeembodiments, a plurality of RF-ICs 120 are picked and placed on thedielectric layer DI, wherein the RF-ICs 120 picked and placed on thedielectric layer DI are arranged in array. When the RF-ICs 120 on thedielectric layer DI are arranged in array, pluralities of antennas 112and the grounded conductors 114 are used, the antennas 112 and thegrounded conductors 114 are classified into groups, and the number ofthe RF-ICs is corresponding to the group number of the antennas 112 andthe grounded conductors 114.

As shown in FIG. 2, the top surface of the passivation layer 124 islower than the top surfaces of the antenna 112 and the groundedconductor 114, and the top surface of the passivation layer 124 ishigher than the top surfaces of the conductive terminals 122. However,the invention is not limited thereto. In some alternative embodiments,the top surface of the passivation layer 124 is substantially alignedwith the top surfaces of the antenna 112 and the grounded conductor 114,and the top surface of the passivation layer 124 is higher than the topsurfaces of the conductive terminals 122.

As shown in FIG. 2, one RF-IC or a plurality of RF-ICs 120 may be placedon the dielectric layer DI after the formation of the at least oneantenna 112 and the at least one grounded conductor 114. However, theinvention is not limited thereto. In some alternative embodiments, oneRF-IC or a plurality of RF-ICs 120 may be placed on the dielectric layerDI before the formation of the at least one antenna 112 and the at leastone grounded conductor 114.

After the bonding of the RF-IC 120 and the fabrication of the at leastone antenna 112 and the at least one grounded conductor 114, aninsulating material 130 is formed on the dielectric layer DI so as tocover the RF-IC 120, the at least one antenna 112 and the at least onegrounded conductor 114. In some embodiments, the insulating material 130is a molding compound formed by molding process. The conductiveterminals 122 and the passivation layer 124 of the RF-IC 120 areencapsulated or covered by the insulating material 130. In other words,the conductive terminals 122 and the passivation layer 124 of the RF-IC120 are not revealed and are well protected by the insulating material130. In some embodiments, the insulating material 130 may include epoxyresin or other suitable resins.

Referring to FIG. 2 and FIG. 3, the insulating material 130 is thengrinded until the top surfaces of the antenna 112, the groundedconductor 114, the conductive terminals 122 and the passivation layer124 are exposed. In some embodiments, the grinding process for grindingthe insulating material 130 may be mechanical grinding process and/orchemical mechanical polishing (CMP) process.

After the insulating material 130 are grinded, an insulatingencapsulation 130 a is formed on the dielectric layer DI. During thegrinding process for grinding the insulating material 130, thepassivation layer 124 is partially grinded and a grinded passivationlayer 124 a is thus formed. In some embodiments, during the grindingprocess for grinding the insulating material 130 and the passivationlayer 124, the at least one antenna 112 and the at least one groundedconductor 114 are partially grinded, and at least one grinded antenna112′ and at least one grinded grounded conductor 114′ are formed. Asshown in FIG. 3, a patterned conductive layer 110′ including the grindedantenna 112′ and the grinded grounded conductor 114′ is formed.

As shown in FIG. 3, the grinded insulating encapsulation 130 a laterallyencapsulates the sidewalls of the RF-IC 120, and the grinded insulatingencapsulation 130 a is penetrated by the antenna 112′ and the groundedconductor 114′. In other words, the RF-IC 120, the antenna 112′ and thegrounded conductor 114′ are embedded in the insulating encapsulation 130a. It is noted that the height of the grinded antenna 112′ and thegrinded grounded conductor 114′ (or the electromagnetic wave reflector)is substantially the same as the height of the grinded insulatingencapsulation 130 a.

Referring to FIG. 4, FIG. 5 and FIG. 9, after the insulatingencapsulation 130 a is formed, a redistribution circuit structure 140 isformed on the insulating encapsulation 130 a, the at least one antenna112′, the at least one grounded conductor 114′ and the passivation layer124 a. As shown in FIG. 4 and FIG. 5, the redistribution circuitstructure 140 of this embodiment includes a plurality ofinter-dielectric layers 142 and a plurality of redistribution conductivelayers 144 stacked alternately, and the redistribution conductive layers144 are electrically connected to the conductive terminals 122 of theRF-IC 120, the at least one antenna 112′ embedded in the insulatingencapsulation 130 a and the at least one grounded conductor 114′embedded in the insulating encapsulation 130 a. As shown in FIG. 4 andFIG. 9, the bottommost inter-dielectric layer 142 partially covers theinsulating encapsulation 130 a, the at least one antenna 112′, the atleast one grounded conductor 114′ and the passivation layer 124 a suchthat the at least one antenna 112′, the at least one grounded conductor114′ and the conductor terminals 122 are partially exposed. Thebottommost redistribution conductive layer 144 is disposed on thebottommost inter-dielectric layer 142. The bottommost inter-dielectriclayer 142 may include a plurality of contact openings for exposing theat least one antenna 112′, the at least one grounded conductor 114′ andthe conductor terminals 122. Furthermore, the at least one antenna 112′embedded in the insulating encapsulation 130 a is electrically connectedto the conductive terminals 122 of the RF-IC 120 through the bottommostredistribution conductive layer 144, and the grounded conductors 114′embedded in the insulating encapsulation 130 a are electricallyconnected to one another through the bottommost redistributionconductive layer 144. In some alternative embodiments, the at least onegrounded conductors 114′ embedded in the insulating encapsulation 130 aare electrically connected to the conductive terminals 122 (i.e.grounded terminals) of the RF-IC 120 through the bottommostredistribution conductive layer 144.

FIG. 10 through FIG. 14 are perspective views schematically illustratingthe patterned conductive layer and a portion of the redistributioncircuit structure in accordance with various embodiments. Referring toFIG. 10, the patterned conductive layer 110 a includes a plurality ofantennas 112′ and a plurality of grounded conductors 114 a, wherein eachgrounded conductors 114 a are distributed between one of the antennas112′ and the RF-IC 120. The antennas 112′ are electrically connected tothe RF-IC 120 through a part of the redistribution conductive layer 144,and the grounded conductors 114 a are electrically connected to oneanother through another part of the redistribution conductive layer 144.As shown in FIG. 10, four antennas 112′ are distributed aside four sidesof the RF-IC 120, and four grounded conductors 114 a are disposed alongand paralleled with four sides of the FR-IC 120. However, the number ofthe antennas 112′ and that of the grounded conductors 114 a are notlimited in this embodiment.

Referring to FIG. 11, the patterned conductive layer 110 b includes aplurality of antennas 112′ and a plurality of grounded conductors 114 b,wherein each grounded conductor 114 b is distributed between one of theantennas 112′ and the RF-IC 120. The antennas 112′ are electricallyconnected to the RF-IC 120 through a part of the redistributionconductive layer 144, and the grounded conductors 114 b are electricallyconnected to one another through another part of the redistributionconductive layer 144. As shown in FIG. 11, four antennas 112′ aredistributed aside four sides of the RF-IC 120, and four groundedconductors 114 b each includes a notch respectively. The four groundedconductors 114 b are disposed around four sides of the FR-IC 120,respectively. However, the number of the antennas 112′ and that of thegrounded conductors 114 b are not limited in this embodiment.

Referring to FIG. 12, the patterned conductive layer 110 c includes aplurality of antennas 112′, a plurality of grounded conductors 114 a anda plurality of grounded conductors 114 c, wherein each groundedconductor 114 a is distributed between one of the antennas 112′ and theRF-IC 120. The grounded conductors 114 c are distributed correspondingto the corners of the RF-IC 120, and each of the grounded conductors 114c may isolate two of the antennas 112′ adjacent thereto. The antennas112′ are electrically connected to the RF-IC 120 through a part of theredistribution conductive layer 144, and the grounded conductors 114 aand the grounded conductors 114 c are electrically connected to oneanother through another part of the redistribution conductive layer 144.As shown in FIG. 12, four antennas 112′ are distributed aside four sidesof the RF-IC 120, and four grounded conductors 114 a are disposed alongand paralleled with four sides of the FR-IC 120. However, the numbers ofthe antennas 112′, the grounded conductors 114 a and the groundedconductors 114 c are not limited in this embodiment.

Referring to FIG. 13, the patterned conductive layer 110 d includes aplurality of antennas 112′, a plurality of grounded conductors 114 a anda shielding ring 116, wherein each grounded conductor 114 a isdistributed between one of the antennas 112′ and the RF-IC 120. Theshielding ring 116 surrounds the RF-IC 120 and is located between thegrounded conductors 114 a and the RF-IC 120 so as to shield the antennas112′ from being interfered by the RF-IC 120. The antennas 112′ areelectrically connected to the RF-IC 120 through a part of theredistribution conductive layer 144, and the grounded conductors 114 aare electrically connected to one another through another part of theredistribution conductive layer 144. As shown in FIG. 13, four antennas112′ are distributed aside four sides of the RF-IC 120, and fourgrounded conductors 114 a are disposed along and paralleled with foursides of the FR-IC 120. The shielding ring 116 is slightly larger thanthe RF-IC 120 in dimension. However, the numbers of the antennas 112′,the grounded conductors 114 a and the shielding ring 116 are not limitedin this embodiment.

Referring to FIG. 14, the patterned conductive layer 110 e includes aplurality of antennas 112′ and a shielding ring 116, wherein theshielding ring 116 is grounded, and the shielding ring 116 is betweeneach of the antennas 112′ and the RF-IC 120. In the embodiment shown inFIG. 14, since the shielding ring 116 is grounded, the shielding ring116 may be deemed as ground conductor. The shielding ring 116 surroundsthe RF-IC 120 to shield the antennas 112′ from being interfered by theRF-IC 120. The antennas 112′ are electrically connected to the RF-IC 120through a part of the redistribution conductive layer 144. As shown inFIG. 14, four antennas 112′ are distributed at four sides of the RF-IC120, and the shielding ring 116 is slightly larger than the RF-IC 120 indimension. However, the numbers of the antennas 112′ and the shieldingring 116 are not limited in this embodiment.

As shown in FIG. 5, the topmost redistribution conductive layer 144 ofthe redistribution circuit structure 140 may include a plurality ofconductive pads. In some embodiments, the conductive pads include aplurality of under-ball metallurgy (UBM) patterns 144 a for ball mountand/or at least one connection pad 144 b for mounting of at least onepassive component. The number of the UBM patterns 144 a and the numberof the at least one connection pad 144 b are not limited in theinvention.

Referring to FIG. 6, after forming the redistribution circuit structure140, a plurality of conductive balls 150 are placed on the UBM patterns144 a and at least one passive component 160 are placed on theconnection pads 144 b. In some embodiments, the conductive balls 150 areplaced on the UBM patterns 144 a through ball placement process, and theat least one passive component 160 is mounted on and electricallyconnected to the at least one connection pad 144 b through solderingprocess or reflow process. The conductive balls 150 are electricallyconnected to at least one of the antennas 112′, the grounded conductor114′ and the conductive terminals 122 of the RF-IC 120 through theredistribution circuit structure 140. Furthermore, the at least onepassive component 160 is electrically connected to at least one of theantennas 112′, the grounded conductor 114′ and the conductive terminals122 of the RF-IC 120 through the redistribution circuit structure 140.

Referring to FIG. 6 and FIG. 7, after the conductive balls 150 and theat least one passive component 160 are placed or mounted on theredistribution circuit structure 140, the dielectric layer DI formed onthe surface of the insulating encapsulation 130 a is delaminated fromthe de-bonding layer DB such that dielectric layer DI is de-bonded fromthe de-bonding layer DB and the carrier C. In some embodiments, thede-bonding layer DB (e.g. LTHC release layer) is irradiated by UV lasersuch that the dielectric layer DI can be de-bonded from the carrier C.As shown in FIG. 7, after forming the conductive balls 150 and the atleast one passive component 160, the integrated fan-out package 100 ofthe RF-IC 120 is essentially accomplished.

In the above-mentioned embodiments, since the RF-IC 120 and the antenna112′ are embedded in the insulating encapsulation 130 a of theintegrated fan-out package 100, the layout area of the redistributioncircuit structure 140 is not occupied by the antenna 112′ and it is moreflexible for the circuit layout of the redistribution circuit structure140. Furthermore, since the insulating encapsulation 130 a of theintegrated fan-out package 100 have sufficient thickness and/or volumefor accommodating the antenna 112′ and the RF-IC 120, the integration ofthe antenna 112′ and the RF-IC 120 may not increase the volume of theintegrated fan-out package 100 significantly.

An embodiment of the invention provides an integrated fan-out package,comprising: an insulating encapsulation; a radio frequency integratedcircuit comprising a plurality of conductive terminals; an antenna; aground conductor, wherein the radio frequency integrated circuit, theantenna and the ground conductor are embedded in the insulatingencapsulation, and the ground conductor is between the radio frequencyintegrated circuit and the antenna; and a redistribution circuitstructure disposed on the insulating encapsulation, wherein theredistribution circuit structure is electrically connected to theplurality of conductive terminals, the antenna, and the groundconductor.

Another embodiment of the invention provides an integrated fan-outpackage, comprising: an insulating encapsulation; a radio frequencyintegrated circuit comprising a plurality of conductive terminals; aplurality of antennas; a plurality of electromagnetic wave reflectors,wherein the radio frequency integrated circuit, the plurality ofantennas and the plurality of electromagnetic wave reflectors areembedded in the insulating encapsulation, and each of the plurality ofelectromagnetic wave reflectors is between the radio frequencyintegrated circuit and one of the plurality of antennas to reflectelectromagnetic wave generated from the plurality of antennasrespectively; and a redistribution circuit structure disposed on theinsulating encapsulation, wherein the redistribution circuit structureis electrically connected to the plurality of conductive terminals, theplurality of antennas, and the plurality of electromagnetic wavereflectors, and the plurality of electromagnetic wave reflectors areconnected to one another through the redistribution circuit structure.

Still another embodiment of the invention provides a method offabricating an integrated fan-out package. The method includes: forminga patterned conductive layer on a carrier, the patterned conductivelayer comprising an antenna and a grounded conductor electricallyinsulated from the antenna; mounting a radio frequency integratedcircuit on the carrier, the radio frequency integrated circuitcomprising a plurality of conductive terminals and the groundedconductor being between the radio frequency integrated circuit and theantenna; forming an insulating encapsulation on the carrier, the radiofrequency integrated circuit, the antenna and the grounded conductorbeing embedded in the insulating encapsulation; and forming aredistribution circuit structure on the insulating encapsulation,wherein the redistribution circuit structure is electrically connectedto the conductive terminals, the antenna and the ground conductor andthe antenna is electrically connected to the conductive terminalsthrough the redistribution circuit structure.

The foregoing outlines features of several embodiments so that thoseskilled in the art may better understand the aspects of the presentdisclosure. Those skilled in the art should appreciate that they mayreadily use the present disclosure as a basis for designing or modifyingother processes and structures for carrying out the same purposes and/orachieving the same advantages of the embodiments introduced herein.Those skilled in the art should also realize that such equivalentconstructions do not depart from the spirit and scope of the presentdisclosure, and that they may make various changes, substitutions, andalterations herein without departing from the spirit and scope of thepresent disclosure.

1. An integrated fan-out package, comprising: an insulatingencapsulation; a radio frequency integrated circuit comprising aplurality of conductive terminals; an antenna; a ground conductor,wherein the radio frequency integrated circuit, the antenna and theground conductor are embedded in the insulating encapsulation and theground conductor is between the radio frequency integrated circuit andthe antenna; and a redistribution circuit structure disposed on theinsulating encapsulation, wherein the redistribution circuit structureis electrically connected to the plurality of conductive terminals, theantenna and the ground conductor.
 2. The package according to claim 1,wherein the antenna comprises a dipole antenna.
 3. The package accordingto claim 1, wherein heights of the antenna and the grounded conductorare substantially the same.
 4. The package according to claim 1, whereinthe ground conductor comprises an electromagnetic wave reflector.
 5. Thepackage according to claim 1 further comprising a plurality ofconductive balls disposed on and electrically connected to theredistribution circuit structure, wherein the plurality of conductiveballs are electrically connected to at least one of the antenna, theground conductor and the plurality of conductive terminals through theredistribution circuit structure.
 6. The package according to claim 1further comprising at least one passive component disposed on andelectrically connected to the redistribution circuit structure, whereinthe at least one passive component is electrically connected to at leastone of the antenna, the ground conductor and the plurality of conductiveterminals through the redistribution circuit structure.
 7. The packageaccording to claim 1 further comprising a shielding ring, wherein theshielding ring surrounds the radio frequency integrated circuit and islocated between the grounded conductor and the radio frequencyintegrated circuit.
 8. The package according to claim 1, wherein thegrounded conductor comprises a shielding ring and the shielding ringsurrounds the radio frequency integrated circuit.
 9. An integratedfan-out package, comprising: an insulating encapsulation; a radiofrequency integrated circuit comprising a plurality of conductiveterminals; a plurality of antennas; a plurality of electromagnetic wavereflectors, wherein the radio frequency integrated circuit, theplurality of antennas and the plurality of electromagnetic wavereflectors are embedded in the insulating encapsulation and each of theplurality of electromagnetic wave reflectors is between the radiofrequency integrated circuit and one of the plurality of antennas toreflect electromagnetic wave generated from the plurality of antennasrespectively; and a redistribution circuit structure disposed on theinsulating encapsulation, wherein the redistribution circuit structureis electrically connected to the plurality of conductive terminals, theplurality of antennas and the plurality of electromagnetic wavereflectors, and the plurality of electromagnetic wave reflectors areconnected to one another through the redistribution circuit structure.10. The package according to claim 9, wherein the antennas comprisedipole antennas.
 11. The package according to claim 9, wherein theelectromagnetic wave reflectors are electrically insulated from theplurality of antennas and the plurality of electromagnetic wavereflectors are grounded.
 12. The package according to claim 9, whereinheights of the plurality of antennas, the plurality of electromagneticwave reflectors and the insulating encapsulation are substantially thesame.
 13. The package according to claim 9 further comprising aplurality of conductive balls disposed on and electrically connected tothe redistribution circuit structure, wherein the plurality ofconductive balls are electrically connected to at least one of theplurality of antennas, the plurality of electromagnetic wave reflectorsand the plurality of conductive terminals through the redistributioncircuit structure.
 14. The package according to claim 9 furthercomprising at least one passive component disposed on and electricallyconnected to the redistribution circuit structure, wherein the at leastone passive component is electrically connected to at least one of theplurality of antennas, the plurality of electromagnetic wave reflectorsand the plurality of conductive terminals through the redistributioncircuit structure.
 15. The package according to claim 9 furthercomprising a shielding ring, wherein the shielding ring surrounds theradio frequency integrated circuit and is located between the pluralityof electromagnetic wave reflectors and the radio frequency integratedcircuit.
 16. A method of fabricating an integrated fan-out package,comprising: forming a patterned conductive layer on a carrier, thepatterned conductive layer comprising an antenna and a groundedconductor electrically insulated from the antenna; mounting a radiofrequency integrated circuit on the carrier, the radio frequencyintegrated circuit comprising a plurality of conductive terminals andthe grounded conductor being between the radio frequency integratedcircuit and the antenna; forming an insulating encapsulation on thecarrier, wherein the radio frequency integrated circuit, the antenna andthe grounded conductor are embedded in the insulating encapsulation; andforming a redistribution circuit structure on the insulatingencapsulation, wherein the redistribution circuit structure iselectrically connected to the plurality of conductive terminals, theantenna and the ground conductor and the antenna is electricallyconnected to the plurality of conductive terminals through theredistribution circuit structure.
 17. The method according to claim 16,wherein the antenna and the grounded conductor are formed by a platingprocess.
 18. The method according to claim 16, wherein the radiofrequency integrated circuit is mounted on the carrier before theantenna and the grounded conductor are formed.
 19. The method accordingto claim 16, wherein the radio frequency integrated circuit is mountedon the carrier after the antenna and the grounded conductor are formed.20. The method according to claim 16 further comprising: de-bonding theinsulating encapsulation from the carrier after the redistributioncircuit structure is formed.